TSH is a pituitary hormone that stimulates the production of thyroid hormone by the thyroid gland. This production can be blocked by sodium perchlorate (SP), which inhibits the cellular import of iodine necessary for thyroid hormone synthesis. What would be the effect of TSH or SP exposure, respectively, on the timing of metamorphosis in frog larvae?
A) Premature metamorphosis; premature metamorphosis
B) Premature metamorphosis; delayed metamorphosis
C) Delayed metamorphosis; premature metamorphosis
D) Delayed metamorphosis; delayed metamorphosis

Question

Quizplus · Accepted Answer

Metamorphosis in amphibians is triggered by the secretion of thyroid hormone from the thyroid gland, which coordinates the various processes that are involved in this important developmental transition.

TSH Is a Pituitary Hormone That Stimulates the Production of Thyroid